Tire-shrinker.



G. E. BLAKE.

TIRE $HRINKER.

APPLICATION FILED MAE.17,1908.

Patented June 7, 1910.

UNITED STATES PATENT 1Q.

GEORGE E. BLAKE, OF QUINCY, INDIANA.

TIRE-SHRINKER.

To all whom it may concern:

Be it known that I, GEORGE E. BLAKE, a citizen of the United States,residing at Quincy, in the county of Owen and State of Indiana, haveinvented new and useful Improvements in Tire-Shrinkers, of which thefollowing is a specification.

This invention relates to a device for shrinking the tires of vehicles,and the object of the invention is to provide a device of this characterwhich will automatically grip the tire and hold it securely inengagement while a lever operating a pair of arms is moved to bring thearms toward each other, thus compressing the tire between the arms andeffectively shrinking the tire.

Another object of the invention is to provide a device for shrinkingtires, having a pair'of pivoted arms provlded with offsets having teethand weighted dogs pivotally secured above the offsets and provided withteeth adapted to secure the tire, the arms being provided with anoperating lever whereby they are swung toward each other and thestandard supporting the arms and lever being provided with an offsetforming a substantial anvil, upon which the compressed portion of theshrunk tire may be flattened.

To these ends the invention resides in the novel construction ofelements and their arrangement in operative combination hereinafterfully described and claimed.

In the accompanying drawings, Figure l is a side elevation of a tireshrinking device constructed in accordance with my inven-. tion. Fig. 2is a top plan view of the same. Fig. 3 is a central transverse sectionalview upon the line 3-3 of Fig. 1.

My improved tire shrinking device may be positioned upon any desiredsuitable support, and in the accompanying drawings I have shown the face1 of my device positioned upon a bench 2, and retained thereon bysuitable bolts 3. The base 1 is provided with a vertical extension 4,providing a suitable standard, having its upper extremity provided witha perforation 5, adapted for the reception of a cotter pin 6, by whichthe arms of the shrinker are secured upon the standard. The arms 7 and 8are each of an arcuate' formation and are each provided with a circularoffset portion 9, upon their faces. These offsets 9 are provided upontheir upper circular faces with teeth 10, and pivotally secured to thearms 7 and 8 directly Specification of Letters Patent.

Application filed March 17, 1908.

Patented June 7, 1910.

Serial No. 421,627.

above the offsets are the clamping dogs 11. These clamping dogs 11 havetheir lower faces provided with teeth adapted to coact with the teeth 10of the offsets 9 to retain a tire between the dogs and the offsets. Thedogs ll'have a toe portion 12, projecting forward of their pivots andare provided with an upstanding oortion 13 having a weighted extension14, ac apted to overlie the toe portion 12 of the dog and to normallyforce the teeth of the dog downwardly into engagement with the teeth ofthe offsets 9. The arms 7 and 8 are provided with an extension 15 belowthe offset 9, and each of these extensions is provided with a series ofperforations 16 adapted for the reception of a pin 18, by which links 20are pivotally secured to the arms. The standard 4 is provided with asuitable perforation 19, located in the center thereof and directlybetween the extensions 15 of the arms 7 and 8. Positioned within thisopening 19 is a shaft 20, having a disk 21 provided upon its face withperforations by which the free ends of the links 20 may be attached.Upon the inner face of the standard 41, the shaft 20 is provided with asuitable handle or lever 22, by which the shaft is adapted to berotated. Positioned upon the standard 1, directly between the innerfaces of the offsets 9 of the arms 7 and 8 is an offset 23, which isadapted to serve as an anvil whereby the compressed portion of the tiremay be flattened, or whereby the ends of the tire may be weldedtogether, when it is found necessary to cut the tire for shrinking.

The operation of my device is as follows: The tire is heated at thepoint where it is to be shrunk, and if necessary out. The points betweenthe heated portion of the tire are inserted between the teeth of thedogs 11 and the teeth of the offsets 9, it being understood that thejaws are spread away from each other when the tire is thus positioned.When the tire is secured, the handle or lever 22 is rotated, causing thedisk 21 to revolve and carrying with it the links 20 secured to the arms7 and 8, swinging the arms together and effectively shrinking the tire.It will be noted that by providing the extensions 15 of the arms 7 and 8with the perforations 16, the links 20 may be readily adjusted throughthe medium of the pins 18 and the amount of throw given to the arms,when the lever 22 is moved, may be readily regulated.

From the above description it will be noted that I have provided asimple, cheap and effective device for shrinking tires of vehicles, onewherein the vehicle tire is antomatically retained upon the arms, andthe arms effectively swung together with a slight amount of physicalexertion. It will be also noted that I have provided a tire shrinkerwith an effective anvil whereby the compressed portion of the tire maybe flattened while the tire is being shrunk, and whereby the ends of thetire may be effectively welded together when it becomes necessary to cutthe tire.

Having thus fully described the invention what is claimed as new is:

In a tire shrinking machine, a standard provided with Verticallystraight faces and having its rear face provided with an offset at itslower end and its front face provided with an integrally formedoutwardly projecting member forming an anvil, a pair of oppositelydisposed curved arms pivotally connected to the top of the standard,said arms each having their lower portions substantially strai htenedand their outer faces provided with arcuate integrally formed serratedfaced offsets, dogs pivotally connected with the arms directly above theoffsets thereof, each of said dogs having a serrated face and anupwardly extending arcuate eX- tension provided with a weight, thestraight ened portions of the arms being provided with spaced openings,the standard below the anvil being provided with an opening, a shaftextending through this opening, a handle connected with the shaft andpositioned adjacent the rear face of the stand- I ard, the forwardlyprojecting portion of the shaft being provided with a disk, link memberspivotally connected with the disk at diametrically opposite points, saidlink members having their free ends provided with removable memberswhereby they may be positioned in any of the openings provided in thestraightened portions of the arms.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE E. BLAKE. Witnesses HENRY J. EDWARDS, H. O. SrocKwnLL.

